Unchecked popen/pclose Return Values

src/reHDD.cpp

@@ -405,6 +405,7 @@ void reHDD::filterIgnoredDrives(list<Drive> *plistDrives)
             FILE *outputfileBlkid = popen(sCMD.c_str(), "r"); // get UUID from drive
             if (outputfileBlkid == NULL)
             {
+                pclose(outputfileBlkid);
                 exit(EXIT_FAILURE);
             }
 
@@ -684,6 +685,7 @@ bool reHDD::getSystemDrive(string &systemDrive)
     if (outputfileHwinfo == NULL)
     {
         Logger::logThis()->error("Unable to scan attached drives for system drive");
+        pclose(outputfileHwinfo);
         exit(EXIT_FAILURE);
     }